English Senior High over 7 yearsago

(2) の問題が答えはイと書いてあったのですが has had installed の働き？文法？がわかりません😂 解説をお願いしたいです🙇‍♂️ よろしくお願いします

(2) (3) Mary has had a microwave oven ( ア) install イ) installed Would you like ( ) cup of tea? ア) another イ) more NT 4 ) in her kitchen. ウ) installing ウゥ) other TTP エ) to insta エ) others

English Senior High about 10 yearsago

Seen under a microscope, a fresh snowflake has a delicate six-pointed shape. なぜSeenなのでしょうか？ お願いしますm(_ _)m